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      MnsUtil
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        <h5 id="消息队列简单使用"><a href="#消息队列简单使用" class="headerlink" title="消息队列简单使用"></a>消息队列简单使用</h5><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span 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com.fasterxml.jackson.core.JsonProcessingException;</span><br><span class="line">import com.fasterxml.jackson.databind.ObjectMapper;</span><br><span class="line">import com.ifenghui.app.comment.exception.FhException;</span><br><span class="line">import org.apache.log4j.Logger;</span><br><span class="line">import org.springframework.beans.factory.annotation.Value;</span><br><span class="line">import org.springframework.integration.support.json.Jackson2JsonObjectMapper;</span><br><span class="line">import org.springframework.stereotype.Component;</span><br><span class="line">import java.lang.reflect.Method;</span><br><span class="line">import java.util.Date;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">@Component</span><br><span class="line">public class MnsUtil&#123;</span><br><span class="line"></span><br><span class="line">    Logger logger= Logger.getLogger(MnsUtil.class);</span><br><span class="line">    public MNSClient getClient() &#123;</span><br><span class="line">        return client;</span><br><span class="line">    &#125;</span><br><span class="line">    private static MNSClient client = null;</span><br><span class="line">    @Value(&quot;$&#123;mns.accountendpoint&#125;&quot;)</span><br><span class="line">    String endPoint;//=&quot;http://20900454.mns.cn-hangzhou.aliyuncs.com&quot;;</span><br><span class="line">    @Value(&quot;$&#123;mns.accesskeyid&#125;&quot;)</span><br><span class="line">    String accessKeyId;//=&quot;xxxxxxxxx&quot;;</span><br><span class="line">    @Value(&quot;$&#123;mns.accesskeysecret&#125;&quot;)</span><br><span class="line">    String accessKeySecret;//=&quot;xxxxxxxxxxxx&quot;;</span><br><span class="line">    @Value(&quot;$&#123;mns.prefix&#125;&quot;)</span><br><span class="line">    String mnsPrefix;</span><br><span class="line">    public MnsUtil() &#123;</span><br><span class="line"></span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    public MnsUtil(String endPoint,String accessKeyId,String accessKeySecret,String mnsPrefix) &#123;</span><br><span class="line">        this.endPoint=endPoint;</span><br><span class="line">        this.accessKeySecret=accessKeySecret;</span><br><span class="line">        this.accessKeyId=accessKeyId;</span><br><span class="line">        this.mnsPrefix=mnsPrefix;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    public void init()&#123;</span><br><span class="line">        if(client!=null)&#123;</span><br><span class="line">            return;</span><br><span class="line">        &#125;</span><br><span class="line">        CloudAccount account = new CloudAccount(</span><br><span class="line">                accessKeyId,</span><br><span class="line">                accessKeySecret,</span><br><span class="line">                endPoint);</span><br><span class="line">        client = account.getMNSClient();</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    public CloudQueue createQueue(String queueName)&#123;</span><br><span class="line">            this.init();</span><br><span class="line">        CloudQueue queue1=null;</span><br><span class="line">        try&#123;</span><br><span class="line">            QueueMeta meta1 = new QueueMeta();</span><br><span class="line">            meta1.setQueueName(this.mnsPrefix+queueName);</span><br><span class="line">            meta1.setPollingWaitSeconds(30);</span><br><span class="line">            meta1.setMaxMessageSize(2048L);</span><br><span class="line">            queue1 = client.createQueue(meta1);</span><br><span class="line">            return queue1;</span><br><span class="line"></span><br><span class="line">        &#125;catch (Exception e)&#123;</span><br><span class="line">           e.printStackTrace();</span><br><span class="line">        &#125;</span><br><span class="line">            return queue1;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    public void deleteMessage(CloudQueue queue,String messageHandle)&#123;</span><br><span class="line">        this.init();</span><br><span class="line">        queue.deleteMessage(messageHandle);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    public &lt;M&gt; void popMessageThread(String queueName,Object listener,Class&lt;M&gt; messageType)&#123;</span><br><span class="line"></span><br><span class="line">        MnsUtil mnsUtil=this;</span><br><span class="line">        try&#123;</span><br><span class="line">            this.createQueue(queueName);</span><br><span class="line">        &#125;catch (Exception e)&#123;</span><br><span class="line">            e.printStackTrace();</span><br><span class="line">        &#125;</span><br><span class="line"></span><br><span class="line">        Runnable task=new Runnable() &#123;</span><br><span class="line">            @Override</span><br><span class="line">            public void run() &#123;</span><br><span class="line">                mnsUtil.popMessage(queueName,listener,messageType);</span><br><span class="line">            &#125;</span><br><span class="line">        &#125;;</span><br><span class="line">        Thread t=new Thread(task);</span><br><span class="line">        t.start();</span><br><span class="line">    &#125;</span><br><span class="line">    public &lt;M&gt; Message popMessage(String queueName,Object listener,Class&lt;M&gt; messageType)&#123;</span><br><span class="line">        this.init();</span><br><span class="line">        CloudQueue queue= client.getQueueRef(mnsPrefix+queueName);</span><br><span class="line"></span><br><span class="line">                while (true)&#123;</span><br><span class="line">                    try&#123;</span><br><span class="line">                        Message popMsg=null;</span><br><span class="line">                        try&#123;</span><br><span class="line">                            popMsg = queue.popMessage();</span><br><span class="line">                        &#125;catch (Exception e)&#123;</span><br><span class="line">                            logger.info(&quot;popMessage a message error&gt;&gt;&gt;&gt; currentTime&quot;+new Date());</span><br><span class="line">                            Thread.sleep(60000);</span><br><span class="line">                            e.printStackTrace();</span><br><span class="line">                        &#125;</span><br><span class="line">                        if(popMsg==null)&#123;</span><br><span class="line">                            continue;</span><br><span class="line">                        &#125;</span><br><span class="line">                        logger.info(&quot;read a message&gt;&gt;&gt;&gt;&quot;+popMsg.getMessageBody());</span><br><span class="line"></span><br><span class="line">                        Method method=listener.getClass().getMethod(&quot;process&quot;, messageType);</span><br><span class="line">                        M message=this.getMessageBody(popMsg.getMessageBody(),messageType);</span><br><span class="line">                        method.invoke(listener,message);</span><br><span class="line">                        String handle=popMsg.getReceiptHandle();</span><br><span class="line">                        queue.deleteMessage(handle);</span><br><span class="line">                    &#125;catch (Exception e)&#123;</span><br><span class="line">                        logger.error(&quot;error message&gt;&gt;&gt;&gt;&quot;+e.getMessage()+&quot;:&quot;+queueName);</span><br><span class="line">                        e.printStackTrace();</span><br><span class="line">                        continue;</span><br><span class="line">                    &#125;</span><br><span class="line"></span><br><span class="line">                    System.out.println(&quot;read a message&quot;);</span><br><span class="line">                &#125;</span><br><span class="line"></span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">     public &lt;M&gt; M getMessageBody(String messageBody,Class&lt;M&gt; jsonType) throws Exception &#123;</span><br><span class="line">        Jackson2JsonObjectMapper jackson2JsonObjectMapper=new Jackson2JsonObjectMapper();</span><br><span class="line">        M messageObj=jackson2JsonObjectMapper.fromJson(messageBody,jsonType);</span><br><span class="line"></span><br><span class="line">        return messageObj;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">    public Message pushMessage(MnsMessage object) throws JsonProcessingException &#123;</span><br><span class="line">        if(object.getQueueName()==null)&#123;</span><br><span class="line">            logger.error(&quot;queue is null&quot;);</span><br><span class="line">            return null;</span><br><span class="line">        &#125;</span><br><span class="line">        this.init();</span><br><span class="line">        ObjectMapper mapper = new ObjectMapper();</span><br><span class="line">        CloudQueue queue= client.getQueueRef(mnsPrefix+MnsMessageListener.mnsQueueName);</span><br><span class="line">        String messageBody=  mapper.writeValueAsString(object);</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">        Message message = new Message();</span><br><span class="line">        message.setMessageBody(messageBody);</span><br><span class="line">        Message putMsg = queue.putMessage(message);</span><br><span class="line">        return putMsg;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">    public static void main(String[] args)&#123;</span><br><span class="line">        MnsUtil mnsUtil=new MnsUtil();</span><br><span class="line">        System.out.println(&quot;over&quot;);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">ImMessage imMessage=<span class="keyword">new</span> ImMessage();</span><br><span class="line"></span><br><span class="line">imMessage.setContent(p.getContent());</span><br><span class="line">imMessage.setFrom(<span class="string">"29"</span>);</span><br><span class="line">imMessage.setTo(userList);</span><br><span class="line">mnsUtil.pushMessage(imMessage);</span><br></pre></td></tr></table></figure>
      
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